40234431 has 8 divisors (see below), whose sum is σ = 53975680. Its totient is φ = 26658072.

The previous prime is 40234421. The next prime is 40234433. The reversal of 40234431 is 13443204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40234431 - 2⁵ = 40234399 is a prime.

It is a super-2 number, since 2×40234431² = 3237618875787522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40234398 and 40234407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40234433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40651 + ... + 41628.

It is an arithmetic number, because the mean of its divisors is an integer number (6746960).

Almost surely, 2^40234431 is an apocalyptic number.

40234431 is a deficient number, since it is larger than the sum of its proper divisors (13741249).

40234431 is a wasteful number, since it uses less digits than its factorization.

40234431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82445.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 40234431 is about 6343.0616424563. The cubic root of 40234431 is about 342.6620072889.

Adding to 40234431 its reverse (13443204), we get a palindrome (53677635).

The spelling of 40234431 in words is "forty million, two hundred thirty-four thousand, four hundred thirty-one".